<!--
  Purpose:
    Make it possible to use a consistent grid/consistent measurements. Always
    use these values together with mm units.

  Authors:    Stefan Knorr <sknorr@suse.de>
  Copyright:  2013, Stefan Knorr

-->

<!ENTITY column             "22.5">
<!ENTITY columnfragment     "9.5"> <!-- ( 22.5 + 6 ) / 3 -->
<!ENTITY gutter             "6">
<!ENTITY gutterfragment     "2"> <!-- 6 / 3 -->

<!ENTITY thinline           "0.25">
<!ENTITY mediumline         "0.5">
<!ENTITY thickline          "0.75">

<!ENTITY goldenratio        "1.618">
